Here are the boots using loop cuts. I noticed that my approach added a few more loops and faces than those in the lecture so I did some dissolve to remove unnecessary faces.
Yep, looks like you are into those loop cuts, boots-and-all.
For driving, shoes that are not bulky are most suitable. After all, you have to feel the degree of pressing the pedal very subtly and well, in order to avoid emergency situations. This is really a very important aspect when choosing shoes that will be really comfortable while driving, so think about it. Personally, I prefer comfortable moccasins, which are very light and give me the feeling of working with a pedal. These are the ones I ordered using the forstep style website. Try to find a similar one and you. But remember that it should fit your everyday style.